Working security at a club I often hold onto the knives and pepper spray of our patrons. Although I never intend to keep them, I have had 6-7 knives and a few pepper spray canisters come home with me...

Same alarm clock. That's two votes now for the giant Garfield clock. Look more into it, seriously. It's HUGE and extremely loud. No artificial beeps, just a good old-fashioned hammer banging rapidly...